Malicious PDF — malware analysis report

Static analysis result for SHA-256 87a09bbed82c8c07…

MALICIOUS

PDF

44.1 KB Created: 2021-05-17 10:02:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e467cce6cb8fcd7f89b922182d0f0f0c SHA-1: 2a1f412fee63395a1b251e0b2684f80a76cc4b26 SHA-256: 87a09bbed82c8c0786be49b7a22dfe34b17406ed954c351fd32a40a4dc010ff0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/how-to-get-free-spins-on-coin-master-2021-game-hack PDF link annotation
    • https://daringmanbs.manbengkuluselatan.sch.id/__statics/gudangsoal/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://daringmanbs.manbengkuluselatan.sch.id/__statics/gudangsoal/files/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • https://daringmanbs.manbengkuluselatan.sch.id/__statics/gudangsoal/files/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://daringmanbs.manbengkuluselatan.sch.id/__statics/gudangsoal/files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • https://daringmanbs.manbengkuluselatan.sch.id/__statics/gudangsoal/files/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • https://daringmanbs.manbengkuluselatan.sch.id/__statics/gudangsoal/files/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • https://daringmanbs.manbengkuluselatan.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • https://daringmanbs.manbengkuluselatan.sch.id/__statics/gudangsoal/files/robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://daringmanbs.manbengkuluselatan.sch.id/__statics/gudangsoal/files/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://daringmanbs.manbengkuluselatan.sch.id/__statics/gudangsoal/files/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • https://daringmanbs.manbengkuluselatan.sch.id/__statics/gudangsoal/files/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • https://daringmanbs.manbengkuluselatan.sch.id/__statics/gudangsoal/files/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://daringmanbs.manbengkuluselatan.sch.id/__statics/gudangsoal/files/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • https://daringmanbs.manbengkuluselatan.sch.id/__statics/gudangsoal/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://daringmanbs.manbengkuluselatan.sch.id/__statics/gudangsoal/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • https://daringmanbs.manbengkuluselatan.sch.id/__statics/gudangsoal/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://daringmanbs.manbengkuluselatan.sch.id/__statics/gudangsoal/files/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://daringmanbs.manbengkuluselatan.sch.id/__statics/gudangsoal/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://daringmanbs.manbengkuluselatan.sch.id/__statics/gudangsoal/files/free-minecraft-domain_GM479516143.pdfIn PDF document text
    • https://daringmanbs.manbengkuluselatan.sch.id/__statics/gudangsoal/files/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E4F 25528 bytes
SHA-256: 2e4ddb38dbae649a27d7c02c5029a42b27c65358df9799f2c4cfb41b030d06a4
font_01_sfnt_off00008983.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8983 18452 bytes
SHA-256: 240b90d3225a309efd4f22f05c72cc9c47fc9cdac152c3e16e2e4001354cf22f

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